[R] write.csv fails with $ operator invalid for atomic

ggraves ggraves at sfwmd.gov
Tue Dec 1 19:36:51 CET 2009


I want to export a csv file so I can do other things with it.

I issue this command to break down years as to whether it was windy or not:

t<-tapply(TURB,list(year,windy),mean,na.rm=T)

which results in:

> t
            no       yes
1990 21.516514  39.86400
1991 13.580435  28.87500
1992 12.171429  22.93913
1993 21.550893  26.41200
1994 12.003913  40.76928
1995 14.707917  35.39057
1996 22.041765  44.54927
1997 17.577625  31.60761
1998 26.283978  34.36190
1999 14.597922  43.85804
2000 30.805139  63.06042
2001 23.204545  36.64634
2002 21.062791  32.86696
2003 14.487111  33.68727
2004 36.294595  73.38125
2005 49.089583 114.28333
2006 44.941667  89.37917
2007 57.456667  70.00435
2008 52.251163  89.83864
2009 24.212821  37.49375

when I issue this command

write.csv(t$table, file = "t.csv")

I get the error

ERROR $ operator is invalid for atomic vectors

??


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